1. Describe what you think would happen if a male mouse acquired a mutation that gave it tan or a sandy colored belly AND female mice wanted to mate with this more about 1 % more than a male mouse with a white belly? 2. Now, suppose that the females were really wild about the sandy colored belly of this male mouse. The females wanted to mate with this lucky mouse about 10% more than males with a white belly? What would happen to the frequency of sandy colored bellies in this population over time? 3. What is the selective pressure at work in questions 1 & 3?
1. Describe what you think would happen if a male mouse acquired a mutation that gave it tan or a sandy colored belly AND female mice wanted to mate with this more about 1 % more than a male mouse with a white belly?
2. Now, suppose that the females were really wild about the sandy colored belly of this male mouse. The females wanted to mate with this lucky mouse about 10% more than males with a white belly? What would happen to the frequency of sandy colored bellies in this population over time?
3. What is the selective pressure at work in questions 1 & 3?
4. Describe what this statement means: "The division of humans into races by using skin color is an arbitrary social construct."
5. What are melanosomes? Name the cell type that produces melanosomes.
6. What happens to melanosomes after they are released into keratinocytes?
7. List the three factors that work together to create the range of skin colors we see today.
8. Describe the main function of keratinocytes and of melanosomes inside of keratinocytes.
9. Describe the relationship between sunlight, skin tone and Vitamin D.
10. Describe the relationship between sunlight, skin tone and folic acid.
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